as soon as i turn on pc ,pc turns off

please help me. i dont no how this problem started and if insert pen drive also it turns off help me .what should i do get rid of sudden turn off.once my pc turned off as soon as i inserted pendrive.other day it turned off as soon as i turned on.

Replace the cooling fan on your CPU. When the computer either over heats or the speed of the cooling fan on the CPU changes, the system will automatically shut down to prevent damage. Remember it only take 2-5 seconds for a CPU to over heat with out its cooling fan.

If the following:Your CPU heat sink is free from accumulated dust. ANDYour heat sink/fan is positively properly seated. ANDYour fan is spinning at a reasonably fast RPM.THEN you might have a bad memory module. In this case, use Memtest to test your memory. If it fails and you have more than one module, retest with only one module at a time to see which is bad and replace accordingly. If it will not even load, or crashes, also try again with one at a time, if the same problem separately with 2 or more, then look elsewhere for your problem.

You have to be a little bit crazy to keep you from going insane.If all else fails, read instructions.

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